#centent_2{
/*background: red;*/
width: 100%;
height: 454px;
float: left;
margin: 10px;
}
.lunbo{
    display: block;
    position: absolute;
    top:200px;
    left: 5px;
    height: 432px;

}
.lb{
    display: none;

    /*margin-top: 200px;*/

}
.lb:nth-child(1){
display: block;
}
#ul_12{
width: 300px;
height: 50px;
position: absolute;
top: 410px; left: 434px;
list-style: none;
text-align: center;
}
#ul_12 li{
width:30px; height:30px;
background: #ccc;
border-radius: 50%;
display: inline-block;
text-align: center;
line-height: 30px;
cursor: pointer;
}
#ul_12 li:nth-child(1){
background: red;
color: white;
}
#Arrow{
height: 50px;
position: absolute;
top: 210px; left: 220px;
width: 730px;
}
.Arrow_q{
width: 30px;
height: 50px;
text-align: center;
line-height: 50px;
background: rgba(0,0,0,0.2);
cursor: pointer;
color: white;
}
.left_Arrow{
float: left;
}
.right_Arrow{
float: right;
}